WO2012114767A1 - Air conditioning device for vehicle - Google Patents

Air conditioning device for vehicle Download PDF

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Publication number
WO2012114767A1
WO2012114767A1 PCT/JP2012/001269 JP2012001269W WO2012114767A1 WO 2012114767 A1 WO2012114767 A1 WO 2012114767A1 JP 2012001269 W JP2012001269 W JP 2012001269W WO 2012114767 A1 WO2012114767 A1 WO 2012114767A1
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WO
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Patent type
Prior art keywords
air
heat exchanger
indoor heat
duct
heating
Prior art date
Application number
PCT/JP2012/001269
Other languages
French (fr)
Japanese (ja)
Inventor
高橋 康文
Original Assignee
パナソニック株式会社
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating devices
    • B60H1/00007Combined heating, ventilating, or cooling devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating devices
    • B60H1/00007Combined heating, ventilating, or cooling devices
    • B60H1/00021Air flow details of the heating, ventilating and cooling [HVAC] devices
    • B60H1/00035Air flow details of the heating, ventilating and cooling [HVAC] devices for sending an air stream of uniform temperature into the passenger compartment
    • B60H1/00057Air flow details of the heating, ventilating and cooling [HVAC] devices for sending an air stream of uniform temperature into the passenger compartment the air being heated and cooled simultaneously, e.g. using parallel heat exchangers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating devices
    • B60H1/00642Control systems or circuits, control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • B60H1/00899Controlling the flow of liquid in a heat pump system
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating devices
    • B60H1/00642Control systems or circuits, control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • B60H1/00899Controlling the flow of liquid in a heat pump system
    • B60H1/00921Controlling the flow of liquid in a heat pump system where the flow direction of the refrigerant does not change and there is an extra subcondenser, e.g. in an air duct
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating devices
    • B60H1/22Heating, cooling or ventilating devices the heat being derived otherwise than from the propulsion plant
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating devices
    • B60H1/00007Combined heating, ventilating, or cooling devices
    • B60H1/00021Air flow details of the heating, ventilating and cooling [HVAC] devices
    • B60H2001/00114Heating or cooling details
    • B60H2001/00135Deviding walls for separate air flows
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating devices
    • B60H1/00007Combined heating, ventilating, or cooling devices
    • B60H1/00021Air flow details of the heating, ventilating and cooling [HVAC] devices
    • B60H2001/0015Temperature regulation
    • B60H2001/00178Temperature regulation comprising an air passage from the HVAC box to the exterior of the cabin
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B13/00Compression machines, plant or systems with reversible cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2313/00Compression machines, plant, or systems with reversible cycle not otherwise provided for
    • F25B2313/027Compression machines, plant, or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02741Compression machines, plant, or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2341/00Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
    • F25B2341/06Details of flow restrictors or expansion valves
    • F25B2341/066Refrigeration circuits using more than one expansion valve
    • F25B2341/0662Refrigeration circuits using more than one expansion valve arranged in series
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements, e.g. for transferring liquid from evaporator to boiler
    • F25B41/04Disposition of valves

Abstract

A vehicular air conditioning device (1A) comprising: an outside air induction port (33) for inducting outside air into the cab; and a duct (3) having an inflow port (31) for drawing inside air into the interior, and an outflow port (32) for blowing air out into the cab. A first inside heat exchanger (12A) and a second inside heat exchanger (12B) of a heat pump circuit (2A) are arranged in the duct (3). The first inside heat exchanger (12A) primarily contributes to heating, and the second inside heat exchanger (12B) primarily contributes to cooling. The duct (3) is provided with a heating discharge port (34) for discharging air that has been cooled by the second inside heat exchanger (12B) to the outside of the cab during a heating operation, and/or a cooling discharge port (35) for discharging air that has been heated by the first inside heat exchanger (12A) to the outside of the cab during a cooling operation. The energy required to adjust the temperature of the air in the cab can be efficiently used without being wasted.

Description

Vehicle air-conditioning system

The present invention relates to a vehicle air conditioner that performs cabin cooling and heating.

Conventionally, in an automobile equipped with a gasoline engine, while the heat pump is used for cooling the waste heat of the engine has been utilized for heating. In recent years, waste heat of the engine is small hybrid vehicle, and electric vehicle waste heat of the engine is not available and is becoming popular, the vehicular air conditioning system as adapted to use the heat pump to the heating not only cooling to suit this it has been developed. For example, Patent Document 1, the vehicle air conditioner 100 as shown in FIG. 6A is disclosed.

The vehicle air conditioner 100 includes a heat pump circuit 110 in which the refrigerant flows only in one direction. The heat pump circuit 110, the compressor 121 includes a first indoor heat exchanger 131, the first expansion valve 122, an outdoor heat exchanger 133, the second expansion valve 123 and the second indoor heat exchanger 132, these instruments flow They are connected in this order by the road. Further, the heat pump circuit 110, a short circuit path and has a short circuit path and is provided to bypass the second expansion valve 123, the first on-off valve for these shorting path 141 and a second bypass the first expansion valve 122 off valve 142 are respectively provided.

The first indoor heat exchanger 131 and the second indoor heat exchanger 132 is disposed inside air or outside air selectively in the duct 150 to flow. The duct 150 in the inside air or outside air is introduced from one end of the second indoor heat exchanger 132 side by an unillustrated blower, the inside air or outside air is blown into the passenger compartment from the other end of the first indoor heat exchanger 131 side that. That is, the second indoor heat exchanger 132 is located on the upwind side of the first indoor heat exchanger 131.

In addition, the duct 150 within, as shown in FIG. 6B, the first damper 161 is disposed on the windward side of the second indoor heat exchanger 132, the second damper on the windward side of the first indoor heat exchanger 131 162 There has been arranged.

In this configuration of the vehicle air conditioner 100, cooling operation, the first on-off valve 141 is opened, the second on-off valve 142 is closed. Further, the first damper 161 and the second damper 162 is set to the position indicated by the solid line in Figure 6B. Accordingly, the refrigerant discharged from the compressor 121 is expanded by the second expansion valve 123 after flowing into the outdoor heat exchanger 133 and heat radiation here without radiating the first indoor heat exchanger 131. Expanded refrigerant is sucked into the compressor 121 after heat absorption in the second indoor heat exchanger 132.

On the other hand, during the heating operation, the first on-off valve 141 is closed, the second on-off valve 142 is opened. Further, the first damper 161 and the second damper 162 is set to the position indicated by the two-dot chain line in FIG. 6B. Accordingly, the refrigerant discharged from the compressor 121 releases heat in the first indoor heat exchanger 131, is expanded in the first expansion valve 122. Expanded refrigerant flows into the outdoor heat exchanger 133, where it is sucked into the compressor 121 without further endotherm at second indoor heat exchanger 132 after the endothermic.

Patent No. 3433297 Publication

Incidentally, if the outside air is taken into the duct 150 in the case where outside air is introduced into the passenger compartment through a duct 150 in other words, necessary to discharge inside air of the same amount as the introduced external air (air in the passenger compartment) outside there is. However, inside air is because those already temperature is adjusted by heating or cooling, when discharging the inside air as it is to the outside, the energy required is wasted to adjust the inside air temperature.

In view of such circumstances, and an object thereof is to provide a vehicle air conditioner capable of utilizing the energy efficiently.

In order to solve the above problems, the present invention provides a vehicle air-conditioning system for performing vehicle compartment cooling and heating, and the vehicle interior air introduction for introducing outside air into port, the passenger compartment of the air into a duct and blower to cause a flow of air toward the outlet from the inlet into the duct with the inside air to capture the inlet and outlet for blowing air into the passenger compartment is, the duct primarily the first indoor heat exchanger contributes to heating disposed within the second indoor heat exchanger contributes primarily cooling is arranged in the duct, and the placed outdoor heat exchanger to the vehicle outside comprising: a heat pump circuit, and said duct, said first chamber the air cooled by the second indoor heat exchanger during the heating operation for heating an exhaust port for discharging to the vehicle outside, and during cooling operation Cooling exhaust port for discharging the heated air in the exchanger to the vehicle outside, at least one of is provided, to provide a vehicle air conditioner.

According to the above configuration, when the heating outlet is provided, on the way inside air warmed by the heating is discharged to the outside, it is possible to remove heat by the second indoor heat exchanger from the inside air . On the other hand, if the cooling air outlet is provided, on the way inside air chilled by the cooling is discharged to the outside, it is possible to provide the inside air heat by the first indoor heat exchanger. That is, in either case, it is possible to utilize the inside air is discharged to the outside reasonably and take advantage of energy efficiency.

Configuration view of a vehicular air conditioning apparatus according to a first embodiment of the present invention Diagram illustrating a configuration example of another duct Configuration diagram of a vehicle air-conditioning system of a modification of the first embodiment Configuration view of a vehicular air conditioning apparatus according to a second embodiment of the present invention 5A and 5B is a diagram showing the construction of a switching means alternative 6A is block diagram of a conventional air conditioner for a vehicle, FIG. 6B is an explanatory view showing a damper for use in an air conditioning system for the vehicle

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the following description is related to an example of the present invention, the present invention is not limited thereto.

(First Embodiment)
Figure 1 is a configuration diagram of a vehicle air conditioner 1A according to the first embodiment of the present invention. This vehicle air conditioner 1A is for performing cabin cooling and heating of an unillustrated includes a heat pump circuit 2A for circulating a refrigerant, and a control unit 6. As the refrigerant, R134a, R410A, HFO-1234yf , HFO-1234ze, in addition to such CO 2, other HFC system, HC-based and available.

The heat pump circuit 2A includes a compressor 11, a first indoor heat exchanger 12A, the first expansion valve 13A, the outdoor heat exchanger 14 includes a second expansion valve 13B, and the second indoor heat exchanger 12B. These devices (11,12A, 13A, 14,13B, 12B) is connected to the annular in this order by the first flow path 2a ~ sixth flow path 2f.

Compressor 11 which is driven by an unillustrated electric motor, discharged from the discharge port to compress the refrigerant sucked from the suction port. Electric motor also may be arranged in the interior of the compressor 11, it may be arranged externally. Discharge port of the compressor 11 is connected to the first indoor heat exchanger 12A through the first flow path 2a.

The first indoor heat exchanger 12A is intended primarily contributes to heating, it is arranged in the duct 3. Duct 3 has an outlet 32 ​​for blowing air to the inlet port 31 and the in-room for taking the inside air which is air in the passenger compartment to the inside. In addition, the duct 3, and the blower 4 is arranged near the inlet 31 as the blower of the present invention produces a flow of air blower 4 is directed from the inlet 31 into the duct 3 to the outlet 32 . Incidentally, the blower of the present invention is not limited to the blower 4, or may be fan. In the case of using a fan, it is also possible to place the fan near the outlet 32.

In the present embodiment, the outside air introduction port 33 for introducing outside air into the passenger compartment is provided in the duct 3, the outside air is adapted to be introduced into the passenger compartment through the duct 3. Furthermore, the duct 3, intake damper 51 for adjusting the ratio of the inside air quantity to be incorporated into the duct 3 through the quantity and the inlet 31 of the outside air is taken into the duct 3 through the outside air inlet 33 is provided . The first indoor heat exchanger 12A performs heat exchange between the inside air and / or outdoor air and the refrigerant is supplied by the blower 4. In this embodiment, the first indoor heat exchanger 12A functions as both a condenser and during the heating operation cooling operation. The first indoor heat exchanger 12A is connected to the first expansion valve 13A through the second flow path 2b.

The first expansion valve 13A is directly passed through the refrigerant during the cooling operation, thereby expanding the refrigerant during a heating operation. The first expansion valve 13A is connected to the outdoor heat exchanger 14 via the third passage 2c.

Outdoor heat exchanger 14 is disposed outside the vehicle compartment (e.g., the front of the automobile), the heat exchange between the outside air and the refrigerant supplied by the travel and fan 16 of the vehicle. Outdoor heat exchanger 14 functions as a condenser during cooling operation, and functions as an evaporator during the heating operation. Outdoor heat exchanger 14 is connected to the second expansion valve 13B through the fourth flow path 2d.

The second expansion valve 13B inflates the refrigerant during the cooling operation, it is passed through the refrigerant during heating operation. The second expansion valve 13B is connected to the second indoor heat exchanger 12B via a fifth passage 2e.

The second indoor heat exchanger 12B is intended primarily contributes to the cooling, is arranged in the duct 3, exchanges heat with the inside air and / or outdoor air and the refrigerant is supplied by the blower 4. In this embodiment, the second indoor heat exchanger 12B are positioned upwind side of the first indoor heat exchanger 12A in the duct 3. The second indoor heat exchanger 12B functions as both the evaporator and during the heating operation cooling operation. The second indoor heat exchanger 12B is connected through a sixth flow path 2f to the suction port of the compressor 11. Incidentally, in the sixth flow path 2f, the accumulator 15 is provided.

Next, the structure of the inside of the duct 3 in detail. In FIG. 1, the portion for accommodating the first indoor heat exchanger 12A and the second indoor heat exchanger 12B in the duct 3 is drawn in a cylindrical shape having a constant cross-sectional area schematically, the ducts 3 the actual shape may be or have wavy or are inflated to fit the space where the duct 3 is installed. Further, outlet 32 ​​described above, defroster outlet, it may be branched into a plurality, such as the face air outlet and foot air outlet.

In this embodiment, the second indoor heat exchanger 12B is a second flow path without passing through the first passage 3A and the second indoor heat exchanger 12B passing through the second indoor heat exchanger 12B in the duct 3 3B and are arranged so as to form the layer. Similarly, the first indoor heat exchanger 12A is also a fourth channel 3D without passing through the third flow path 3C and the first indoor heat exchanger 12A passing through the first indoor heat exchanger 12A in the duct 3 There has been arranged to form the layer. Also within the duct 3, the first partition plate 41 which partitions the first flow path 3A and the second flow path 3B, and the second partition plate 42 which partitions the third flow path 3C and the fourth channel 3D is It is disposed. The second indoor heat exchanger 12B, and the first indoor heat exchanger 12A, the first flow path 3A is continuous with the fourth flow path 3D, as the second flow path 3B is continuous with the third flow path 3C They are located on opposite sides of the first partition plate 41 and the second partition plate 42.

Furthermore, the duct 3, a first control damper 52 for adjusting the ratio of air volume flowing through the air volume and the second flow path 3B through the first flow path 3A, the air volume and the fourth flow path that flows through the third flow path 3C a second control damper 53 for adjusting the ratio of air volume flowing through the 3D is disposed. In this embodiment, the second control damper 53 is disposed between the first partition plate 41 and the second partition plate 42, a first control damper 52 is disposed on the windward side of the first partition plate 41. However, as shown in FIG. 2, the first control damper 52 is disposed between the first partition plate 41 and the second partition plate 42, a second control damper 53 is disposed on the leeward side of the second partition plate 42 it may be. A first partition plate 41 and the second control damper 53 is disposed between the second partition plate 42 (first control damper 52 in the case of FIG. 2) is downwind end of the first partition plate 41 and the when positioned on a line connecting the windward side of the end portion of the second partition plate 42, to prevent the air passing through the air passing through the first flow path 3A and the second air passage 3B are mixed.

In the following, for simplicity of explanation, the first control damper 52, the bypass-side shut-off position the position to block the second passage 3B, the heat exchanger-side position to block the first flow path 3A blocking position, a position in which the air volume equal flowing air volume and a second flow path 3B through the first flow path 3A intermediate position, position the bypass-side inhibit position between the intermediate position and the bypass-side blocking position, an intermediate position that the position of the heat exchanger side suppression position between the heat exchanger-side shut-off position. On the other hand, the second control damper 53, the bypass-side shut-off position where to cut off the fourth flow path 3D, a position for blocking the third passage 3C heat exchanger-side shut-off position, the leeward side of the first partition plate 41 end and intermediate position the position located on the line connecting the windward-side end of the second partition plate 42, the position the bypass-side inhibit position between the intermediate position and the bypass-side blocking position, an intermediate position and the heat exchanger that the position of the heat exchanger side suppression position between the vessel-side shut-off position.

In addition, the duct 3, the heating exhaust port 34 on the leeward side of the second indoor heat exchanger 12B is provided for cooling the exhaust port 35 is provided on the leeward side of the first indoor heat exchanger 12A. Heating the exhaust port 34 is for discharging air that has been cooled in the second indoor heat exchanger 12B during the heating operation outside the vehicle compartment, the cooling exhaust port 35, the first indoor heat exchanger during cooling operation heated air or to exhaust outside the vehicle compartment at 12A.

In the present embodiment, the heating exhaust port 34 is disposed at a position corresponding to the first partition plate 41 so as to open the first flow path 3A, the cooling air outlet 35 is opened to the third passage 3C It is disposed at a position corresponding to the second partition plate 42 as. However, since the first flow path 3A is continuous with the fourth channel 3D, heating outlet 34, corresponding to the second partition plate 42 so as to open the fourth flow path 3D as shown in FIG. 2 it may be arranged in positions.

Furthermore, the duct 3, the heating discharge damper 54 for opening and closing the heating outlet 34, and the cooling discharge damper 55 for opening and closing the cooling exhaust port 35 is attached.

Heating exhaust damper 54 has a pivot shaft on the leeward side of the heating outlet 34, a heating outlet 34 swings from closed closed position for heating the exhaust port 34 to the inside of the duct 3 open. That is, the heating discharge damper 54, when you open the heating outlet 34 directs the air passing through the second indoor heat exchanger 12B to the heating outlet 34. Note that when opening the heating outlet 34, the heating discharge damper 54 can be stopped at any position by an unillustrated servo motor.

In this embodiment, blocking the heating discharge damper 54, and a closed position closing the heating outlet 34, the tip of the heating discharge damper 54 is a first flow path 3A in contact proximity or contact with the first partition plate 41 and swingable between a blocking position (position indicated by the two-dot chain line in FIG. 1). However, as shown in FIG. 2, if the heating outlet 34 is disposed at a position corresponding to the second partition plate 42, the heating discharge damper 54, and a closed position closing the heating outlet 34, the tip of the heating discharge damper 54 may be swingable between a blocking position for blocking the proximity or contact with the fourth flow path 3D to the second partition plate 42.

Cooling exhaust damper 55 has a pivot shaft on the leeward side of the cooling exhaust port 35, the cooling exhaust port 35 swings from closed closed position for cooling exhaust port 35 to the inside of the duct 3 open. That is, the cooling exhaust damper 55, when opening the cooling exhaust port 35, guides the air that has passed through the first indoor heat exchanger 12A to the cooling exhaust port 35. Incidentally, when opening the cooling outlet 35 for cooling exhaust damper 55 can be stopped at any position by an unillustrated servo motor.

In this embodiment, blocking the cooling discharge damper 55, and closing close the cooling exhaust port 35 position, the tip of the cooling for the exhaust damper 55 is a third flow path 3C contact proximity or contact with the second partition plate 42 and swingable between a blocking position (position indicated by the two-dot chain line in FIG. 1).

Compressor 11, the first expansion valve 13A and the second expansion valve 13B and various dampers 51-55, is controlled by the control unit 6. Control device 6 is connected to the operation panel arranged on the vehicle interior (not shown), it performs the cooling operation and heating operation. Hereinafter, the operation of the vehicle air conditioner 1A in and the heating operation during the cooling operation. However, in the following, it will be described representatively the case where the vehicle interior is ventilated.

<Cooling operation>
During cooling operation, the control device 6 is configured to fully opening the first first expansion valve 13A, and sets the second expansion valve 13B to a predetermined degree. Further, the control device 6, a first control damper 52 is set to the bypass side suppression position, the amount of air flowing through the first flow path 3A is set to be larger than the air volume flowing through the second flow path 3B. At this time, the second control damper 53 is set, for example, in an intermediate position. Therefore, refrigerant discharged from the compressor 11 releases heat in the first indoor heat exchanger 12A and the outdoor heat exchanger 14, the pressure was reduced by the second expansion valve 13B, it absorbs heat in the second indoor heat exchanger 12B .

Also, within the duct 3, intake damper 51 is controlled to outside air rate sufficient ventilation from the outside air introduction port 33 into the duct 3 is taken, the heating discharge damper 54 is closed to close the heating outlet 34 It is set to the position. On the other hand, the cooling discharge damper 55 is, for example, set to a blocking position for blocking the third passage 3C, the cooling air outlet 35 is opened. Therefore, taken in from the inside air and outside air introduction port 33 taken in from the inlet 31 outside air becomes a mixture gas mixed with each other, the flow after the majority of the air-fuel mixture is cooled by the second inner heat exchanger 12B It is blown into the vehicle interior from the outlet 32. The remaining mixture, after being heated by cooling the refrigerant in the first indoor heat exchanger 12A, and is discharged outside the vehicle compartment through the cooling air outlet 35.

Incidentally, the flow rate of the air discharged outside the vehicle compartment through the cooling air outlet 35 is preferably ambient air flow equal to or less taken through the external air inlet port 33. To achieve this, after setting the cooling for discharge damper 55 in blocking position, it may regulate the flow rate into the third flow path 3C at least one of the first control damper 52 and the second control damper 53 . Thus, the total amount of air passing through the first indoor heat exchanger 12A is discharged to the outside. Alternatively, after both the first control damper 52 and the second control damper 53 is set in a desired position, it may regulate the amount of air introduced into the cooling air outlet 35 in the cooling discharge damper 55. In this way, some of the air that has passed through the first indoor heat exchanger 12A is discharged to the outside. In this case, the second control damper 53 is continuously and the first partition plate 41 (intermediate position), even if the first control damper 52 to adjust the flow rate of air flowing in the first flow path 3A and the second flow path 3B good.

Needless to say, when the introduction of outside air into the passenger compartment by temporarily when it is not needed or when parked ventilation without ventilation or for temperature characteristic improvement is not performed at the time of air-conditioning start, exhaust damper for cooling 55 is set to the closed position, the first control damper 52 is set to the bypass side blocking position, the second control damper 53 may be set to the heat exchanger-side shut-off position.

<Heating Operation>
During the heating operation, the control device 6 is configured to fully opening the first second expansion valve 13B, it sets the first expansion valve 13A to a predetermined degree. Further, the control device 6, a first control damper 52 is set to the heat exchanger side suppression position, the amount of air flowing through the second flow path 3B is set to be larger than the air volume flowing through the first flow path 3A. At this time, the second control damper 53 is set, for example, in an intermediate position. Therefore, refrigerant discharged from the compressor 11 releases heat in the first indoor heat exchanger 12A, the pressure was reduced in the first expansion valve 13A, it absorbs heat in the outdoor heat exchanger 14 and the second indoor heat exchanger 12B .

Also, within the duct 3, intake damper 51 is controlled to outside air rate sufficient ventilation from the outside air introduction port 33 into the duct 3 is taken, the cooling discharge damper 55 is closed to close the cooling exhaust port 35 It is set to the position. On the other hand, the heating discharge damper 54 is, for example, set to a blocking position to block the first flow path 3A, the heating outlet 34 is opened. Therefore, taken in from the inside air and outside air introduction port 33 taken in from the inlet 31 outside air becomes a mixture gas mixed with each other, the flow after the majority of the air-fuel mixture is heated by the first indoor heat exchanger 12A It is blown into the vehicle interior from the outlet 32. The remaining mixture, after being cooled by heating the refrigerant in the second indoor heat exchanger 12B, and is discharged outside the vehicle compartment through the heating exhaust port 34.

Meanwhile, the flow rate of the air discharged outside the vehicle compartment through the heating exhaust port 34 is preferably of outside air flow rate equal to or less taken through the external air inlet port 33. To achieve this, after setting the heating discharge damper 54 in blocking position, it may regulate the flow rate of the first control damper 52 flows into the first flow path 3A. Thus, the total amount of air passing through the second indoor heat exchanger 12B is discharged to the outside. Alternatively, after the first control damper 52 is set in a desired position, it may regulate the amount of air guided to the heating exhaust port 34 with the heating discharge damper 54. In this way, part of the air passing through the second indoor heat exchanger 12B is discharged to the outside.

Needless to say, when the introduction of outside air into the passenger compartment is not performed, the heating discharge damper 54 is set to the closed position, the first control damper 52 is set to the heat exchanger-side shut-off position, a second adjustment damper 53 may be set to the bypass side blocking position.

As described above, in the cooling operation, in the middle of the inside air which is cooled by the cooling is discharged to the outside, it is possible to provide the inside air heat by the first indoor heat exchanger 12A. On the other hand, during the heating operation, in the middle of the inside air warmed by the heating is discharged to the outside, it is possible to remove heat by the second indoor heat exchanger 12B from the inside air. In other words, even when either operation may utilize the inside air is discharged to the outside reasonably and take advantage of energy efficiency.

Further, the configuration of the present embodiment is so that a part of the outside air taken into the duct 3 is discharged to the outside, for the outdoor air discharge amount, the first indoor heat exchanger 12A of a cooling operation or the second indoor heat exchanger 12B of the heating operation can work as a sub-heat exchanger of the outdoor heat exchanger 14.

Further, when air taken into the duct 3 is 100% outside air and the other one of the outdoor heat exchanger of the first indoor heat exchanger 12A or the second indoor heat exchanger 12B of the heating operation during the cooling operation can work as a vessel, since the outdoor heat exchanger can be used two other words, it is possible to improve the efficiency of the vehicle air conditioner 1A. More specifically, during the heating operation is endothermic and the outdoor heat exchanger 14 according to the second heat exchanger 12B, cooling operation and the outdoor heat exchanger 14 by the radiation of the first heat exchanger 12A, is expected to improve the capacity and efficiency it can. Further, the interior evaporator becomes unnecessary during the heating operation can be effectively utilized for heating capacity improvement can be effectively used in the cooling capacity improves indoor condenser becomes unnecessary at the time of cooling operation. In this case, it is discharged from such a gap between the members inside air of the outside air in the same amount introduced into the passenger compartment through a duct 3 to an exhaust port or passenger compartment of the vehicle body rear outside. Further, if both of the outside air and inside air is taken into the duct 3, it is possible to obtain both of the effects of energy recovery as described above to the effect of heating or cooling capacity improves.

<Modification>
In the above embodiment, both the size of the first indoor heat exchanger 12A and the second indoor heat exchanger 12B has been smaller than the cross-sectional area of ​​the duct 3 at the position where they are located. However, the present invention is not limited thereto. For example, as shown in FIG. 3, one or both of the first indoor heat exchanger 12A and the second indoor heat exchanger 12B is comparable to the cross-sectional area of ​​the duct 3 at the position where they are placed the size it may have.

All the dampers 51-55 need not be driven singly motors, it may be driven some of them by using such as a link mechanism by a common motor.

Furthermore, in the above embodiment, the two control damper 52 and 53 into the duct 3 has been arranged, while the role of the two control damper 52, 53 and the first partition plate 41 of the second partition plate 42 it is also possible to perform a single control damper disposed.

Further, in the drawings has been exemplified a plate-like damper swings, it is possible to open and close the heating outlet 34 and the cooling exhaust port 35 with a sliding door or a film door.

(Second Embodiment)
Figure 4 is a configuration diagram of a vehicle air conditioner 1B according to a second embodiment of the present invention. In the present embodiment, the same reference numerals are given to the same components as those of the first embodiment, description thereof will be omitted.

Vehicle air-conditioning device 1B of the present embodiment includes a heat pump circuit 2B is switched to flow direction of the refrigerant. The heat pump circuit 2B includes a compressor 11, a four-way valve 17, includes a first indoor heat exchanger 12A, the expansion valve 13, an outdoor heat exchanger 14, and the second indoor heat exchanger 12B, these devices, I am connected by a first flow path 21 to the seventh flow path 27.

Specifically, the discharge port of the compressor 11 is connected to a first port of the four-way valve 17 through the first flow path 21. The second port of the four-way valve 17, through the second flow path 22 is connected to the outdoor heat exchanger 14, the third port of the four-way valve 17, the first indoor heat exchanger via a fifth flow path 25 It is connected to the vessel 12A. Outdoor heat exchanger 14 and the first indoor heat exchanger. 12A, is connected to the expansion valve 13, respectively via the third passage 23 and the fourth flow path 24. The fourth port of the four-way valve 17 is connected to the second indoor heat exchanger 12B via the sixth flow path 26, the second indoor heat exchanger 12B includes a compressor via a seventh flow path 27 11 It is connected to the intake port. Incidentally, in the seventh passage 27, the accumulator 15 is provided.

The expansion valve 13, which is for expanding the refrigerant, which is an example of the expansion mechanism of the present invention. The expansion mechanism of the present invention may be employed displacement type expander such that recovers power from the refrigerant expands.

Four-way valve 17, which functions as switching means of the present invention, the flow direction of the refrigerant flowing through the heat pump circuit 2B, switched to the first direction indicated by the broken line arrow during the cooling operation, the second showing the heating operation with a solid line arrow It switched to the direction. The first direction, the compressor 11 the refrigerant discharged from the outdoor heat exchanger 14, the expansion valve 13, returns the first indoor heat exchanger 12A and the second indoor heat exchanger 12B in the compressor 11 passes in this order is the direction, the second direction, the compressed refrigerant discharged from the compressor 11 is passed through the first indoor heat exchanger 12A, the expansion valve 13, the outdoor heat exchanger 14 and the second indoor heat exchanger 12B in this order a direction to return to the machine 11.

Furthermore, in the present embodiment, the fifth flow path 25 between the first indoor heat exchanger 12A and the four-way valve 17, between an on state to decompress it in the OFF state and the refrigerant passing the refrigerant by the control unit 6 switching is the auxiliary pressure reducing mechanism 18 is provided. Specifically, the auxiliary decompressor 18 is controlled to the OFF state at the time of heating operation and normal cooling operation is controlled to the ON state at the time of energy recovery cooling operation for recovering energy from the internal air to be discharged to the outside among the cooling operation that. When the auxiliary decompressor 18 is controlled to the ON state, the expansion valve 13 is set to a relatively large opening. Therefore, the first indoor heat exchanger 12A is normal cooling operation is functioning as an evaporator, an energy recovery cooling operation functions as a condenser. On the other hand, during the heating operation, the first indoor heat exchanger 12A functions as a condenser. The second indoor heat exchanger 12B, as in the first embodiment, functions as both an evaporator and during the heating operation cooling operation.

Since control of the energy recovery cooling operation and during heating operation during the various dampers 51-55 in the embodiment is the same as the control at the time and the heating operation cooling operation described in the first embodiment, its description omitted.

In the present embodiment, it is possible to obtain the same effect as the first embodiment.

<Modification>
In the above embodiment, although the four-way valve 17 as a switching means have been used, the switching means of the present invention is not limited thereto. For example, switching means, such as shown in FIG. 5A, the first flow path 21 and the sixth flow path 26 and two connected three-way valve 171 is connected in a loop by a pair of pipes 172, their piping 172 second flow path 22 and the fifth flow path 25 may be a connected circuit 17A. Alternatively, the switching means may be a so-called bridge circuit 17B as shown in Figure 5B.

Moreover, it is not always necessary to vacuum assist mechanism 18 is provided in the heat pump circuit 2B. If vacuum assist mechanism 18 is not provided, the first indoor heat exchanger 12A functions only as both an evaporator and during the heating operation cooling operation. That is, since there is no the air is heated in the first indoor heat exchanger 12A in the cooling operation, it may be omitted for cooling exhaust port 35 and the cooling Danba 55. In this case, since the air flowing in the duct 3 in the cooling operation is cooled by both the second indoor heat exchanger 12B, and the first indoor heat exchanger 12A, primarily the first indoor heat exchanger contributes to heating 12A is to contribute to cooling.

(Other embodiments)
In the first and second embodiments, both of the heating outlet 34 and the cooling exhaust port 35 is provided on the duct 3, the duct 3, of the heating outlet 34 and the cooling air outlet 35 at least one of may be provided. For example, a vehicle air conditioner of the present invention, the configuration having only the heating outlet 34 may be one of improving only the heating performance.

Further, in the above embodiment, the outside air introduction port 33 is provided on the duct 3, the external air inlet port 33, as the outside air is introduced directly into the passenger compartment, provided in the member defining the passenger compartment it may be.

Further, the second indoor heat exchanger 12B need not be located on the upwind side than necessarily the first indoor heat exchanger 12A in the duct 3, their positions may be reversed. However, before the second indoor heat exchanger 12B is if positioned windward side of the first indoor heat exchanger 12A, for heating air flowing in the duct 3 during the heating operation in the first indoor heat exchanger 12A it is possible to dehumidify the second indoor heat exchanger 12B.

Vehicle air conditioner of the present invention, since the energy can be carried out cooling and heating by utilizing efficiently, is particularly useful in non-combustion system motor vehicle, such as electric vehicles and fuel cell vehicles.

Claims (11)

  1. A vehicle air-conditioning apparatus for performing the passenger compartment of the cooling and heating,
    And the outside air introduction port for introducing outside air into the passenger compartment,
    A duct having an outlet for blowing air to the inlet and the vehicle interior for taking inside air is the passenger compartment air therein,
    A blower to generate a flow of air toward the outlet from the inlet into the duct,
    Primarily the first indoor heat exchanger contributes to heating disposed within the duct, the second indoor heat exchanger contributes primarily cooling is arranged in the duct, and disposed on the vehicle exterior, during a heating operation functions as an evaporator, and a heat pump circuit including the outdoor heat exchanger functioning as a condenser during cooling operation,
    Air to the duct, which is heated air that has been cooled in the second indoor heat exchanger during the heating operation for heating an exhaust port for discharging to the vehicle outside, and the first indoor heat exchanger during cooling operation cooling exhaust port for discharging to the vehicle outside the, at least one is provided, a vehicle air conditioner.
  2. It said duct, said both heating exhaust port and the cooling exhaust port is provided, air-conditioning system according to claim 1.
  3. A heating exhaust damper for opening and closing the heating outlet, further heating exhaust damper for guiding air having passed through the second indoor heat exchanger to the heating exhaust port when opened the heating exhaust port provided, air-conditioning system according to claim 1 or 2.
  4. A Cooling exhaust damper for opening and closing the cooling exhaust port, when opening the cooling outlet for further cooling for exhaust damper for guiding air having passed through the first indoor heat exchanger to the cooling exhaust port provided, air-conditioning system according to any one of claims 1-3.
  5. The second indoor heat exchanger is located on the upwind side of the first indoor heat exchanger within said duct, air-conditioning system according to any one of claims 1-4.
  6. Within the duct, a first partition plate disposed to partition the second flow path without passing through the first flow path and the second indoor heat exchanger through the second indoor heat exchanger,
    Within the duct, and a second partition plate disposed to partition the fourth channel without passing through the third flow path and the first indoor heat exchanger through the first indoor heat exchanger, the further comprising,
    The first indoor heat exchanger and the second indoor heat exchanger, the first flow path continuous with said fourth flow path, so that the second flow path is continuous with the third flow passage, said across the first partition plate and the second partition plate are located opposite to each other, air-conditioning system according to claim 5.
  7. A first control damper for adjusting the disposed in the duct, the ratio of air volume flowing through the second flow path and air volume flowing through the first flow path,
    Disposed within the duct, further comprising a second control damper for adjusting the ratio of air volume flowing through the air volume and the fourth flow path that flows through the third flow path, the air conditioner for a vehicle according to claim 6 apparatus.
  8. The second control damper is between the second partition plate and the first partition plate, and the air having passed through the third flow path blocking, blocking of the fourth channel, and the first flow path provided as it may be selectively mixing prevention of air passing through the second air path, air-conditioning system according to claim 7.
  9. The outside air inlet is provided in the duct,
    Further comprising an intake damper for adjusting the ratio of the inside air quantity taken into the outside air introduction port through said duct the amount of outside air through said inlet to be incorporated into the duct, in any one of claims 1 to 8, vehicle air-conditioning system as claimed.
  10. The heat pump circuit further includes a second expansion valve, for expanding the refrigerant at the compressor, the first expansion valve for expanding the refrigerant during a heating operation, and cooling operation for compressing a refrigerant,
    The compressor, the first indoor heat exchanger, the first expansion valve, the outdoor heat exchanger, the second expansion valve and the second indoor heat exchanger is connected to the annular in this order by the passage , air-conditioning system according to any one of claims 1-9.
  11. The heat pump circuit further includes a compressor for compressing refrigerant, and an expansion mechanism for expanding the refrigerant, and
    The flow direction of the refrigerant flowing through the heat pump circuit, the refrigerant discharged from the compressor is the outdoor heat exchanger during cooling operation, the expansion mechanism, the first indoor heat exchanger and the second indoor heat exchanger this switched to the first direction back to the compressor through sequentially, the refrigerant is the first indoor heat exchanger discharged from the compressor during heating operation, the expansion mechanism, the outdoor heat exchanger and the second indoor heat through the exchanger in this order, further comprising a switching means for switching the second direction back to the compressor, air-conditioning system according to any one of claims 1-9.
PCT/JP2012/001269 2011-02-24 2012-02-24 Air conditioning device for vehicle WO2012114767A1 (en)

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JP2011037882 2011-02-24

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JP2013500909A JP5884079B2 (en) 2011-02-24 2012-02-24 Vehicle air-conditioning system
CN 201280010311 CN103402795B (en) 2011-02-24 2012-02-24 Vehicle air conditioner
EP20120749988 EP2679419A4 (en) 2011-02-24 2012-02-24 Air conditioning device for vehicle
US14001430 US9346337B2 (en) 2011-02-24 2012-02-24 Air conditioning device for vehicle

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WO2012114767A1 true true WO2012114767A1 (en) 2012-08-30

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JP (2) JP5884079B2 (en)
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US9346337B2 (en) 2016-05-24 grant
JP6167416B2 (en) 2017-07-26 grant
EP2679419A4 (en) 2016-07-13 application
CN103402795B (en) 2016-01-20 grant
JP2015193381A (en) 2015-11-05 application
JPWO2012114767A1 (en) 2014-07-07 application
CN103402795A (en) 2013-11-20 application
EP2679419A1 (en) 2014-01-01 application
JP5884079B2 (en) 2016-03-15 grant
US20130333406A1 (en) 2013-12-19 application

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